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Ilo.l 623,065. i

' Patented Apr, Il, |899. P. vNI. BARRETT. HDISTING AND CONVEYING APPARATUS.

(No'Model.)

(Appxicaeion med nee. 9, 189s.)

2 Sheets-Shet l AIM L /VI E 55 E 5 EWE@ WMM lsaw'e @Barre N0. 623,065. Patnfd Apl. Il, |899.

P. M. BARRETT.

HOISTING AND CONVEYING APPARATUS. l (Appuvzion med me; 9, 139s.)

(No Model.) 2 Sheets-Sheet 2.

MM '5f/ggf UNITED STATES PATENT OEErcE.

PATRICK M. BARRETT, OF ST. LOUIS,'MISSOURI, ASSIGNOR OF ONE-THIRD TO MICHAEL CLEARY, OF SAME PLACE.

HOISTING AND CONVEYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 623,065, dated April 11, 1899. Application filed December 9, 18'98- Serial No. 698,727. 'l\In mmf-.L7

To all whom it may concern: to the sliding block 12, said bar 10 carrying Be it known that I, PATRICK M. BARRETT, a an impact-bar13, supported by links 14, pivcitizen of the United States, residing at the oted at l5 to the bar l0. These links extend city of St. Louis, in the State of Missouri, beyond said pivots 15 and are provided .with 55 5 have invented certain new and useful Impins 16, which ride in slots in the lockingprovenients in I-Ioisting and OonveyingApparod 17. ratus, of which the following is a full, clear, 1S is a coil-spring adapted to keep the imand exact description, reference being had to pact-rod 13 raised, and 19 is another spring .the accompanying drawings, forming part of supported on a bracket 20, attached to the 6o io this specification. sliding block 12, adapted to keep the tripper The object of myinvention is to provide an mechanism in its normal or horizontal posiimproved apparatus for hoisting and conveytion and whose resistance is overcome when ing coal, gravel, and sand and which may the said tripper strikes the ring S. The end also be used for a dredging device. It is -of the locking-bar 17 engagesin arecess 21 in 65 i5 adapted to work automatical1y,and the necesthe sliding block 12 and secures the saine unsity and danger connected with hand operatil the withdrawal of the said bar 17. tion are thereby avoided. The inner ends 22 of the bar 10 have lat- The specific features of novelty are herein- 4` eral extensions 22, to which are pivotally atafter described and pointed out and claimed. taehed the links 23, which in turn are piv- 7o zo Referring to the accompanying drawings, otally attached to a pair of pendent jaws Figure I shows a side elevation of my im- 24. These jaws are pivoted at 25 to the proved hoisting and conveying apparatus,the tackle-block G. It will be readily seen that apparatus being in a position to admit of the when the tripper Inechanisinis thrown from shovel-leaves being sunk in sand or the like. the position shown in Figs. II and V to that 75 Fig. II shows avertical section thereof, taken shown in Figs. I and IV these jaws by reaat right angles to that shown in Fig. I, but son of their connection through the links 23 with the leaves closed. Fig. III is a top plan to the said lateral extensions 22 at the inner View, the traveler and tripper-ring being ends 22 of the tripper will spread and allow omitted. Fig. IV isadetail side elevation of the passage upward of the sliding bars 7, 8o 3o the tripper, partly in section, the same being which carry the sheave 7, the samebeing shown unlocked. Fig. V is a similar view, raised by the pull of the rope 4 around said but the said tripper is shown locked. Fig. sheave. VI shows a top view of Fig. V. The sliding block 12 slides in the squar l is a cable on which the entire device is passage formed by the angle-irons 26. These 3 5 carried,and 2 is the traveler or carriage,which angle-irons are bound together by a top frame may be of any suitable construction. It is 261.v (Seenin Figs. III and VI.) The frame provided with sheaves 3, over which the hoistthus forms supports for the bucketframe ing-rope 4 travels. The end of this hoistingthrough the medium of the hangers 3S. The rope is secured to the hook 5, which is fasmain rope passes around the sheave 7, which 9o 4o tened to the tackle-block 6. The said rope is fastened between the bars 7', which bars after passing over the sheaves 3 is passed unare guided in the sliding sheave-block 12, der the sheave 7, said latter sheave being car: which .inturn rides in the frame formed by ried in the sliding bars 7', then back over the the angle-irons 26. It is the rope that supsheave 3a, and then secured to the hook 5. ports the whole device. Whenapullis exerted 95 45 S is a tripper-ring supported from the travon said rope and the buckets are closed, the eler 2 by means of the straps 9. The tacklesheave-bars 7 are drawnupward and strike block 6 isV so constructed as to be drawn up the check-plates 27. This keeps the whole into the tripper-ring 8, and it carries with it apparatus rigid until it is dropped, so that a tripper mechanism which is operated by its the buckets rest on the earth. Then the slidroo 5o impact with one side of the saidring. It is ing sheave-b'lock falls down to the bottom of constructed of a main bar 10, pivoted at 11 the angle-irons 26, allowing, through the inedium of the toggles described, the buckets to open and the load to be obtained. When the bar 13 impacts against the tripper-ring 8, it is unlocked, as described, and allows the inner end to be raised. This takesvwithit the links 23, the lower ends of which are pivoted to the jaws 24. This opens the said jaws 24 and allows the passage upward therethrough of the bars 7. This upward passage of the sliding sheave-block is accomplished by the pull of the rope around the sheave 7. Secured to the ears 28 on said bars 7 and pivotally attached thereto are the links 29. 30, which engage the eye 32, are hung on the pivot 3l on the sliding block l2 and are pivotally attached to the outer end of the links 29. 27 are check-plates secured in the top of said angle-irons to prevent the sliding block 12 from sliding too far. The angle-irons are braced by a frame 26a at the top thereof and` and by a block .26b at the bottom of the same. The jaws 24 being spread, as described, and the pull on therope 4 being further exerted, it draws the sheave-bars 7' upward through the medium of the rope about the sheave 7. 28 are ears secured to said sheave-bars 7', and to them are pivotally attached lthe links 29. These links in turn are pivotally attached to the hooks 30, which are hung on the pivot 3l to the sliding block l2. These hooks 30 when closed, Fig. Il,'engage the eye 32, which is rigid with a frame 33, made approXima-telyin the form of a Greek cross. Links 34, pivoted thereto, also pivot with arms 35 and form a toggle. Arms 35 are rigid with the leaves 36. When the frame 33 `is lowered, Fig. I, the toggle spreads the leaves apart. The said frame is heldin place by means of the springs 37, secured to the angle-irons 26. Straps 3S,

also secured to the angle-irons 26, support the frame 39, which carries the leavesv 36.

so that the jaws 31 engage the eye S15.

The springs 37 may either be sunk into the sides of the angle-irons 26 or the sliding block l2 may be cut out, as shown, Fig. I, to allow the passage thereover. The said sliding block l2, which slides in the square passage formed by these angle-irons, would slide too far upward when the load is relieved if it were not for the check-plates 27.

Vheu the leaves 36, which form the bucket, are sunk in the material to be hoisted, the rope 4 is drawn tight by any suitable source of power after the sheave-bars 7 are lowered ruis closes the bucket by means of the toggle described, and the whole device may be as far below the tripper-ring as is desired; but when the bucket is to be opened and the load de- The hooks posited the bar 13 is drawn up until it impacts with the ring 8, is unlocked, and the inner end of the main bar raised. This opens the jaws 24 and allows the sheave-bars 7 to advance upward, drawing the hooks 30 apart, thus releasing the eye 32 and opening the l leaves 36 of the bucket.

I claim as my invention and desire to secure by Letters Patent;

l. T hecombination ofa tripper-ring, a main fall-rope, a tackle-block to which said rope is secured, and a tripper comprised of a main bar, an impact-bar, a locking-rod, said impact-bar being attached to said main harby parallel rule-links and controlling said locking-rod, substantially as described.

2. In a hoisting apparatus, the combination of a tripper', a tackle-block, a tripper-ring adapted to operate said tripper, a spring adapted to hold said tripper horizontal until overcome by impact with said trippeiring, links attached to the inner end of said tripper, and jaws pivoted to said tackle-block and 3. The combination of a sliding block, a l

tripper pivoted thereto, a tripper-ring, a tackle-block, jaws pivoted thereto, links connecting said jaws to the inner end of said tripper, a main fall-rope, a sheave carried in a sliding bar around which said rope passes, and adapted to raise the same on the opening of said jaws, substantially as described.

4. The combination of a sliding block, a frame in which said block rides, a sheave-bar, a pair of hooks pivoted to said sheave-bar, and link connection between said sheave-bar and said sliding block, substantially as described. v

5. The combination of a pair ot hooks, a frame, an eye on said frame adapted to be eugaged by said hooks, a bucket made of leaves, toggle connection between said frame and said leaves, and springs adapted to keep said frame depressed until released, substantially as described.

6. The combination of a tripper, a pair of jaws operated by said tripper, a sheave-bar, a pair of hooks operated by the movement of said sheave-bar, an eye adapted to be engaged by said hooks, a bucket, and toggle connection between said eye and the leaves of said bucket, substantially as described.

PATRICK M. BARRETT.

In presence of* E. S. KNIGHT, j STANLEY STONER.

IOO 

